CN211172030U - Constant-current water replenishing system for beach area - Google Patents
Constant-current water replenishing system for beach area Download PDFInfo
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- CN211172030U CN211172030U CN201921988063.7U CN201921988063U CN211172030U CN 211172030 U CN211172030 U CN 211172030U CN 201921988063 U CN201921988063 U CN 201921988063U CN 211172030 U CN211172030 U CN 211172030U
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Abstract
The utility model discloses a beach area constant current water charging system, include: the device comprises a reservoir, a constant-flow water discharging subsystem and an even outflow subsystem. The utility model discloses a constant current subsystem of draining can realize maintaining the weir head invariable according to cistern water level variation automatically regulated weir plate height to keep out the invariant of flow. Meanwhile, the even outflow subsystem is matched, so that the water level can be kept to be even for flood plain with the set overflow depth. Therefore, manpower and material resources are effectively saved, the beach area water replenishing efficiency and benefit are improved, and the problems of beach area scouring erosion and small beach water replenishing coverage area caused by direct water drainage over beaches are solved. The system is simple to operate and high in automation degree.
Description
Technical Field
The utility model belongs to the technical field of the ecological moisturizing in mud flat district, concretely relates to mud flat district constant current water charging system.
Background
Delta, the estuary alluvial plain, is a common surface appearance. Impurities such as silt carried in the running river meet seawater with much higher salt content than fresh water at the sea entrance, flocculate and deposit to gradually become a new wetland at the river mouth shoreside, and further form the delta plain. The top of the delta points upstream of the river, with the outer edge facing the sea, and can be considered the "base" of the triangle.
With the development of economic society, flood control dams are built by a plurality of rivers going into the sea for flood control safety. Therefore, although the two banks of the river in the delta area are protected from the threat of flood, the beach area in the delta area loses the chance of flood, and the estuary beach is continuously salted under the action of increasingly evaporating and accumulating salt of seawater, so that the ecology of the beach area is continuously degraded.
At present, the water resource in China is in short supply, the most strict water resource management system is implemented, the available quantity of river water resources is subjected to the strict red line management system, under the condition that the current ecological civilization construction in China is promoted to be the national strategic requirement, under the large background of the water resource in short supply, the water resource needs to be reasonably regulated and controlled, and the ecological comprehensive benefit of the limited fresh water resources is promoted.
The improvement of the ecological of the visible beach area is a great challenge, the ecological water supplement of the beach area is always the key point of the research of the related field, and particularly the constant and uniform control of the output flow is difficult to realize. In order to realize the maximized ecological benefit by using limited water resources, solve the problem of salinization facing coastal areas such as yellow river delta at present and eliminate the problems of scouring, unstable outflow and the like existing in the current ecological water supplementing technology. The utility model provides a beach area constant current water charging system realizes the science high-efficient of the ecological moisturizing process in beach area.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough among the prior art, the utility model provides a beach constant current water charging system has solved and has erodeed, the unstable problem of outflow in the current ecological moisturizing technique.
In order to achieve the above object, the utility model adopts the following technical scheme: a constant-flow water charging system for a beach area comprises a reservoir, a constant-flow water discharging subsystem and a uniform outflow subsystem;
the reservoir, the constant-flow water discharge subsystem and the uniform outflow subsystem are sequentially connected;
a water outlet is formed in one side of the reservoir and is communicated with the constant-flow water discharging subsystem;
the constant-flow water discharge subsystem comprises a water flow passage, a lifting cofferdam device and a floating ball;
one end of the water flow passage is communicated with a water outlet of the reservoir, and the other end of the water flow passage is connected with the uniform outflow subsystem;
the lifting cofferdam device is arranged on the water flow passage and separates the reservoir from the uniform outflow subsystem;
the floating ball is connected with the lifting cofferdam device.
Further, the lifting cofferdam device comprises a wave stabilizer, a transmission mechanism and a cofferdam;
the wave stabilizer is connected with the cofferdam through a transmission mechanism;
the cofferdam is arranged on the water flow passage and separates the reservoir from the uniform outflow subsystem;
the floating ball is placed in the wave stabilizer, and the wave stabilizer is arranged in a water flow passageway of the cofferdam close to the side of the water storage pool.
Further, the wave stabilizer comprises a hollow cylinder and a hollow circular truncated cone which are integrally connected from top to bottom;
the bottom surface of the hollow round table is closed, and a plurality of pores are uniformly arranged on the surface of the hollow round table.
Furthermore, the cofferdam comprises a clamping groove, a rectangular thin-wall weir and a plurality of balls;
the clamping groove is arranged below the water flow passage, one end of the rectangular thin-wall weir is movably arranged in the clamping groove in a lifting manner, and the other end of the rectangular thin-wall weir is arranged in the water flow passage;
the width of the rectangular thin-wall weir is larger than that of the water flow passage and is in seamless contact with the water flow passage;
the plurality of balls are uniformly arranged on the inner surface of the clamping groove;
the top end of the clamping groove is movably and hermetically connected with the contact part of the thin-wall weir through a slidable rubber sheet;
the height of the rectangular thin-wall weir is the same as that of a cofferdam of the reservoir, and the height of the rectangular thin-wall weir is smaller than that of the clamping groove.
Furthermore, the transmission mechanism comprises a preparation sliding guide rail, two sliding chutes, a horizontal rod, a movable pulley block connecting rod, a movable pulley block and a thin-wall weir connecting rod;
one end of the slide rail is connected with a floating ball in the wave stabilizer, the other end of the slide rail is connected with one end of a horizontal rod, the horizontal rod is arranged on two sliding chutes, the other end of the horizontal rod is connected with one end of a movable pulley block connecting rod, the other end of the movable pulley block connecting rod is connected with a driving wheel in a movable pulley block, a driven wheel in the movable pulley block is connected with one end of the thin-wall weir connecting rod, and the other end of the thin-wall weir connecting rod is connected with two sides of the top end of the rectangular thin-wall weir;
and the connecting points of the preparation sliding guide rail and the horizontal rod and the connecting points of the horizontal rod and the movable pulley block connecting rod are steel nodes.
Furthermore, the floating ball is a hollow iron ball;
the parameters of the floating ball are as follows:
the weight of the floating ball is 1.2-1.5 times of the weight of the rectangular thin-wall weir, and the buoyancy of the floating ball is the sum of the weight of the floating ball and the weight of the rectangular thin-wall weir, wherein the weight of the floating ball is 1.2-1.5 times of the weight of the rectangular thin-wall weir.
Further, the uniform outflow subsystem comprises an overflow tank and an arc-shaped water passing baffle;
the section of the overflow tank is semicircular, the top of one end of the overflow tank is flush with and seamlessly connected with the top of the other end of the water flow passageway, and the other end of the overflow tank is smoothly connected with one end of the beach area to be replenished;
one end of the arc-shaped water passing baffle is fixedly arranged in the overflow tank, the other end of the arc-shaped water passing baffle is suspended in the overflow tank, and the opening end of the arc-shaped water passing baffle faces the rectangular thin-wall weir side;
the arc-shaped water passing baffle is evenly provided with a plurality of water passing holes.
A constant-current water replenishing method for a beach area comprises the following steps:
s1, determining the discharge water depth of the uniform discharge subsystem according to the actual situation of the beach area to be replenished, and further determining the water replenishing parameters of the constant-flow discharge subsystem;
s2, setting a weir water head value during constant-flow water discharging according to water replenishing parameters of the constant-flow water discharging subsystem;
s3, adjusting the initial state of the transmission mechanism according to the height of the water level currently monitored by the floating ball, and further driving the rectangular thin-wall weir to move, so that the water head on the initial weir is a set value;
s4, after the initial weir water head reaches a set value, inputting water in the reservoir into the uniform outflow subsystem through the lifting cofferdam device and driving the rectangular thin-wall weir to move up and down through the transmission mechanism, so that the current weir water head is kept at the set value, and further constant-flow water drainage is realized;
s5, water flowing into the uniform outflow subsystem is uniformly input into the beach area to be replenished through the arc-shaped water passing baffle plate, and constant-flow uniform replenishment of the beach area is realized.
Further, in the step S1, the tapping water depth h of the uniform tapping subsystemOutflowThe calculation formula of (2) is as follows:
houtflow＝K*t+hEvaporation of
Wherein K is the permeability coefficient;
t is the time for the water in the uniform outflow subsystem to reach the ocean,
l is the distance from the uniform outflow subsystem to the ocean, v is the flow rate;
hevaporation ofIs the evaporation capacity;
the water supplementing parameter of the uniform outflow subsystem comprises single-width outflow qOutflowAnd outflow from constant flow discharge subsystemAn amount Q;
said single wide outflow qOutflowComprises the following steps:
qoutflow＝m0(2g)1/2H3/2
In the formula, m0The flow coefficient including the influence of the near flow velocity water head is obtained;
g is the acceleration of gravity;
h is the weir water head value during constant-flow water discharging, and H is 0.1-0.6;
the flow rate Q of the constant-flow water discharge subsystem is as follows:
Q＝m0b(2g)1/2H3/2
in the formula, b is the width of the rectangular thin-wall weir, and b is 0.2-2.0.
Further, in the step S4, the method for driving the rectangular thin-wall weir to move up and down by the transmission mechanism specifically includes:
when the water level in the reservoir rises to enable the current weir water head to be larger than the set value of the weir water head, the floating ball pushes the ready-to-slide guide rail to rise under the action of the buoyancy of the floating ball, so that the horizontal rod is indirectly pushed to rise, the horizontal rod pulls the movable pulley block connecting rod to move upwards in the rising process to drive the movable pulley block to rise, and pulls the thin-wall weir connecting rod to move upwards to enable the rectangular thin-wall weir to rise, so that the weir water head is adjusted to be always kept at the set value in real time;
when the water level in the reservoir falls to enable the current weir water head to be smaller than the set value of the weir water head, the floating ball pulls the ready-to-slide guide rail to fall under the action of the gravity of the floating ball, and then indirectly pulls the horizontal rod to fall, the horizontal rod pulls the movable pulley block connecting rod to move downwards in the falling process to drive the movable pulley block to fall, and pulls the thin-wall weir connecting rod to move downwards to enable the rectangular thin-wall weir to fall, so that the weir water head is adjusted to be always kept at the set value in real time.
The utility model has the advantages that:
the utility model provides a beach area constant current water charging system can realize according to cistern water level variation automatically regulated weir plate height, maintains the weir head invariable to keep out the invariant of flow. Meanwhile, the even outflow subsystem is matched, so that the water level can be kept to be even for flood plain with the set overflow depth. Therefore, manpower and material resources are effectively saved, the beach area water replenishing efficiency and benefit are improved, and the problems of beach area scouring erosion and small beach water replenishing coverage area caused by direct water drainage over beaches are solved. The system is simple to operate and high in automation degree.
Drawings
Figure 1 is the utility model provides a beach area constant current water charging system structure's section view.
Fig. 2 is the utility model provides a beach area constant current water charging system structure's top view.
Fig. 3 is a front view of the cofferdam structure provided by the present invention.
Fig. 4 is a side view of the cofferdam structure provided by the present invention.
Fig. 5 is a schematic view of the connection of the transmission structure provided by the present invention.
Fig. 6 is the structure diagram of the uniform outflow subsystem provided by the present invention.
Fig. 7 is a flow chart of the beach area constant-current water replenishing method provided by the utility model.
Wherein: 1. a reservoir; 2. a constant-flow water discharging subsystem; 3. a uniform outflow subsystem; 4. a beach area; 21. A wave stabilizer; 22. a rectangular thin-wall weir; 23. a card slot; 24. a floating ball; 25. a water flow passageway; 26. preparing a sliding guide rail; 27. a chute; 28. a horizontal bar; 29. a movable pulley block connecting rod; 210. a driving wheel; 211. a driven wheel; 212. a thin wall weir connecting rod; 213. a ball bearing; 31. an arc-shaped water passing baffle; 32. an overflow tank; 33. and (5) passing through the water holes.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art within the spirit and scope of the present invention as defined and defined by the appended claims.
Example 1:
as shown in fig. 1-2, a constant-flow water charging system for beach areas is characterized by comprising a reservoir 1, a constant-flow water discharging subsystem 2 and an even outflow subsystem 3;
the reservoir 1, the constant-flow water discharge subsystem 2 and the uniform outflow subsystem 3 are connected in sequence;
the reservoir 1 has the functions of serving as a water source, settling sand and simulating an ecological lake;
the constant-flow water discharging subsystem 2 is used for adjusting the flow rate of the reservoir 1 to realize constant-flow water discharging;
the uniform outflow subsystem 3 is used for controlling the uniform outflow of the flood beach water quantity and keeping the water level to set the overflow depth to uniform the flood beach.
In the embodiment of the utility model, 1 cofferdam height H of cistern1Is 1.5m and has a designed water level height H21.2 m, high dead water level H3The water storage pool 1 has the functions of a water source, sediment and an ecological lake as well as the function of 0.3 m; in the flood season, when the surplus water in the river is stored, after sedimentation, the settled clean water is discharged to the beach when the beach area 4 needs water supplement, thereby realizing the salinity dilution of the beach area 4 and simultaneously supplementing the ecological water demand of the beach area 4.
The embodiment of the utility model provides an in constant current subsystem 2 that drains utilizes the water level in 24 real-time supervision cisterns of floater 1, adjusts the height of rectangle thin wall weir 22 through transmission structure, and then adjusts the play flow of cistern 1, guarantees that current weir head is the setting value all the time, realizes draining to the constant current of beach district 4.
The embodiment of the present invention provides an even outflow subsystem 3, which is substantially a flood bank pool, for controlling the flood bank water volume to evenly outflow, and maintaining the water level to set the overflow depth to evenly flood the flood bank.
Example 2:
a water outlet is formed in one side of the reservoir 1 in the embodiment 1 and is communicated with the constant-flow water discharging subsystem 2;
the constant-flow water discharging subsystem 2 in fig. 1 comprises a water flow passage 25, a lifting cofferdam device and a floating ball 24; one end of the water flow passage 25 is communicated with the water outlet of the reservoir 1, and the other end of the water flow passage is connected with the uniform outflow subsystem 3; the lifting cofferdam device is arranged on the water flow passage 25 and separates the reservoir 1 from the uniform outflow subsystem 3; the floating ball 24 is connected with the lifting cofferdam device.
Wherein, the water flow passage 25 forms a transition section between the reservoir 1 and the uniform outflow subsystem 3, and provides a space for arranging a lifting cofferdam device; the floating ball 24 is arranged in the reservoir 1 and is connected with the lifting cofferdam device, and the height of the water level monitored by the floating ball 24 provides data support for the up-and-down movement of the lifting cofferdam device; the water storage tank 1 and the uniform outflow subsystem 3 are separated by the lifting cofferdam device, the height of the lifting cofferdam device is adjusted according to the actual size and the like of the beach area 4, the water flow is further controlled, and full coverage and uniform flood plain are realized.
The lifting cofferdam device in the embodiment of the utility model comprises a wave stabilizer 21, a transmission mechanism and a cofferdam;
the wave stabilizer 21 is connected with the cofferdam through a transmission mechanism;
the cofferdam is arranged on the water flow passage 25 and separates the reservoir 1 from the uniform outflow subsystem 3;
a floating ball 24 is placed in the wave stabilizer 21, and the wave stabilizer 21 is arranged in a water flow passage 25 on the side of the cofferdam close to the reservoir 1.
The wave stabilizer 21 comprises a hollow cylinder and a hollow circular truncated cone which are integrally connected from top to bottom; the bottom surface of the hollow round table is closed, and a plurality of pores are uniformly arranged on the surface of the hollow round table. The embodiment of the utility model provides an in the principle of steady ripples ware 21 is similar to the linker, and hollow cylinder's high range is the water level fluctuation range in cistern 1, and the highest point is higher than the water level peak, and the lowest is less than the stagnant water level of cistern 1, a plurality of holes on the hollow round platform make water can get into steady ripples ware 21 through the hole, and steady ripples ware 21 forms the linker with the external world afterwards, and its inside water level and outside water level reach balance, and the water level is kept level.
As shown in fig. 3-4, the cofferdam includes a slot 23, a rectangular thin-wall weir 22 and a plurality of balls 213;
the clamping groove 23 is arranged below the water flow passage 25, one end of the rectangular thin-wall weir 22 is movably arranged in the clamping groove 23 in a lifting manner, and the other end of the rectangular thin-wall weir is arranged in the water flow passage 25;
the width of the rectangular thin-walled weir 22 is greater than the width of the water flow passageway 25 and is in seamless contact;
the balls 213 are uniformly arranged on the inner surface of the clamping groove 23;
the top end of the clamping groove 23 is movably and hermetically connected with the contact part of the thin-wall weir through a slidable rubber sheet;
the height of the rectangular thin-wall weir 22 is the same as that of the cofferdam of the reservoir 1, and the height of the rectangular thin-wall weir 22 is smaller than that of the clamping groove 23.
The contact part of the top end of the clamping groove 23 and the rectangular thin-wall weir 22 is movably and hermetically connected through a slidable rubber sheet, so that water in the reservoir 1 is prevented from entering the clamping groove 23 when passing through the thin-wall weir, and the normal work of the liftable cofferdam is prevented from being influenced; the balls 213 are uniformly arranged on the inner surface of the clamping groove 23, so that the rectangular thin-wall weir 22 is ensured to smoothly move up and down in the clamping groove 23, the friction between the rectangular thin-wall weir 22 and the inner wall of the clamping groove 23 is reduced, and the service life of the cofferdam is prolonged; the width of the rectangular thin-wall weir (22) is larger than that of the water flowing channel (25), so that water in the reservoir enters the uniform outflow subsystem through the upper surface of the rectangular thin-wall weir and cannot flow out from two sides of the rectangular thin-wall weir, and constant-flow outflow of the reservoir is ensured.
As shown in fig. 5, the transmission mechanism includes a preparation slide rail 26, two chutes 27, a horizontal rod 28, a movable pulley block connecting rod 29, a movable pulley block and a thin-walled weir connecting rod 212;
one end of a slide rail 26 is connected with a floating ball 24 in a wave stabilizer 21, the other end of the slide rail is connected with one end of a horizontal rod 28, the horizontal rod 28 is arranged on two sliding grooves 27, the other end of the horizontal rod 28 is connected with one end of a movable pulley block connecting rod 29, the other end of the movable pulley block connecting rod 29 is connected with a driving wheel 210 in a movable pulley block, a driven wheel 211 in the movable pulley block is connected with one end of a thin-wall weir connecting rod 212, and the other end of the thin-wall weir connecting rod 212 is connected with two sides of the top end of a rectangular thin-;
preparing that the connection points of the sliding guide rail 26 and the horizontal rod 28 and the connection points of the horizontal rod 28 and the movable pulley block connection rod 29 are all steel nodes, and the angle is 90 degrees;
the horizontal rod 28 is connected with the sliding chute 27, is always kept horizontal through two sliding contacts and can vertically slide in the sliding chute 27, the movable pulley block is installed in a specific clamping groove 23 and can move up and down under external migration, and the movable pulley block connecting rod 29 and the thin-wall weir connecting rod 212 are respectively connected with the horizontal rod 28 and the rectangular thin-wall weir 22.
The embodiment of the utility model provides an in the working method of drive mechanism do:
when the water level in the impounding reservoir 1 rises to enable the current weir water head to be larger than the set value of the weir water head, the floating ball 24 pushes the ready-to-slide guide rail 26 to rise under the action of the buoyancy of the floating ball, so as to indirectly push the horizontal rod 28 to rise, the horizontal rod 28 pulls the movable pulley block connecting rod 29 to move upwards in the rising process to drive the movable pulley block to rise, and pulls the thin-wall weir connecting rod 212 to move upwards to enable the rectangular thin-wall weir 22 to rise, so that the weir water head is adjusted to be always kept at the set value in; when the water level in the reservoir 1 is lowered to enable the current weir water head to be smaller than the set value of the weir water head, the floating ball 24 pulls the ready-to-slide guide rail 26 to descend under the action of the gravity of the floating ball, and then indirectly pulls the horizontal rod 28 to descend, the horizontal rod 28 pulls the movable pulley block connecting rod 29 to move downwards in the descending process to drive the movable pulley block to descend, and the rectangular thin-wall weir 22 descends after pulling the thin-wall weir connecting rod 212 to move downwards, so that the weir water head is adjusted to be always kept at the set value in real time.
Through the automatic rising (descending) adjusting action of the rectangular thin-wall weir 22, a complete automatic adjusting system is formed, when the water level rises (descends), the rising (descending) height of the rectangular thin-wall weir 22 is consistent with the rising (descending) height of the water level, the effect of real-time adjustment is achieved, and the constant flow is guaranteed.
The floating ball 24 in the embodiment of the utility model is a hollow iron ball, the connection is prepared to the sliding guide rail 26, the connection part forms rigid connection, the hollow iron ball 24 ensures that the prepared sliding guide rail 26 always keeps a vertical state through self gravity, and meanwhile, the hollow iron ball also has certain buoyancy;
parameters of the floating ball 24 are:
the weight of the floating ball 24 is 1.2-1.5 times of that of the rectangular thin-wall weir 22, namely GFloating body＝(1.2-1.5)GWeir typeOf the ball 24The buoyancy is the sum of the weight of the floating ball 24 and 1.2 to 1.5 times of the weight of the rectangular thin-wall weir 22, namely FFloating body＝GFloating body+(1.2-1.5)GWeir typeTherefore, the floating ball 24 can pull the rectangular thin-wall weir 22 to ascend or descend along with the ascending or descending of the water level in the reservoir 1, and the effect of real-time adjustment is achieved.
Example 3:
as shown in fig. 6, the uniform outflow subsystem 3 of the above embodiment 2 comprises an overflow tank 32 and a curved water passing baffle 31;
the cross section of the overflow tank 32 is semicircular, the top of one end of the overflow tank 32 is flush with and seamlessly connected with the top of the other end of the water flow passage 25, and the other end of the overflow tank 32 is smoothly connected with one end of the beach area 4 to be replenished;
one end of the arc-shaped water passing baffle plate 31 is fixedly arranged in the overflow tank 32, the other end of the arc-shaped water passing baffle plate 31 is suspended in the overflow tank 32, and the opening end of the arc-shaped water passing baffle plate 31 faces the rectangular thin-wall weir 22 side;
the arc-shaped water passing baffle 31 is uniformly provided with a plurality of water passing holes 33.
In the embodiment of the present invention, the arc-shaped water passing baffle 31 divides the overflow tank 32 into two parts, the opening side of the arc-shaped water passing baffle 31 and the overflow tank 32 form the first half section of the uniform outflow subsystem, and the closed side of the arc-shaped water passing baffle 31 and the overflow tank 32 form the second half section of the uniform outflow subsystem; after water in the reservoir 1 enters the uniform outflow subsystem 3 through the constant-flow water discharge subsystem 2, incoming water rapidly flows to two sides, the incoming water flows into the overflow tank 32 and rolls when meeting the arc-shaped water passing baffle 31, so that water energy is eliminated, then the water firstly passes through the front half section of the arc-shaped water passing baffle 31 and then is filled in the rear half section of the uniform outflow subsystem 3, then the water overflows the rear half section of the uniform outflow subsystem 3 and uniformly enters the beach area 4, and constant-flow uniform water replenishing of the beach area 4 is realized. Wherein, the arc crosses the effect that water baffle played the energy dissipation on the one hand, and on the other hand has the centralized washing influence that arouses that weakens the incoming water, and the arc crosses the water hole of crossing that evenly sets up on the water baffle simultaneously, has made things convenient for the incoming water to flow out, realizes even flood plain.
Example 4:
as shown in fig. 7, the utility model also provides a beach area constant current moisturizing method, including following step:
s1, determining the discharge water depth of the uniform discharge subsystem according to the actual situation of the beach area to be replenished, and further determining the water replenishing parameters of the constant-flow discharge subsystem;
s2, setting a weir water head value during constant-flow water discharging according to water replenishing parameters of the constant-flow water discharging subsystem;
s3, adjusting the initial state of the transmission mechanism according to the height of the water level currently monitored by the floating ball, and further driving the rectangular thin-wall weir to move, so that the water head on the initial weir is a set value;
s4, after the initial weir water head reaches a set value, inputting water in the reservoir into the uniform outflow subsystem through the lifting cofferdam device and driving the rectangular thin-wall weir to move up and down through the transmission mechanism, so that the current weir water head is kept at the set value, and further constant-flow water drainage is realized;
s5, water flowing into the uniform outflow subsystem is uniformly input into the beach area to be replenished through the arc-shaped water passing baffle plate, and constant-flow uniform replenishment of the beach area is realized.
In the embodiment of the present invention, in the above step S1, for the water supplement of the beach area, the water depth h of the discharge water of the uniform outflow subsystem is set for more precise and full coverageOutflowThe determination process of (2) is:
setting the distance from the uniform outflow subsystem to the ocean to L, the hydraulic slope drop of the beach area to i, the roughness to n and the permeability coefficient to K;
the calculation is carried out according to the talent calculation formula as follows:
wherein V is the flow velocity, m/s; c is a metabolic factor; r is hydraulic radius, m; j ═ i;
the time for the water in the uniform outflow subsystem to reach the ocean is:
wherein t is time, s, L is slope length, m, v is flow speed, m/s;
the evaporation amount is set to h in consideration of evaporationEvaporation ofThe instantaneous release water depth hOutflowComprises the following steps:
houtflow＝K*t+hEvaporation of(3)
Substituting the specific size of the beach area and other parameters into the formulas (1), (2) and (3) for trial calculation, wherein R is approximate to hOutflowGiven an R, determine an hOutflowAfter calculation, when R and h areOutflowWhen the water depth is basically equal, the effluent water depth is determined to be hOutflow。
The water replenishment parameters of the uniform outflow subsystem include a single wide outflow qOutflowAnd the outflow Q of the constant-flow water discharge subsystem, wherein the single-wide outflow QOutflowThe determination method specifically comprises the following steps:
based on the utility model discloses the structure of the subsystem of evenly effluenting in the system adopts the flow formula of open channel to the calculation of flood plain flow, calculates as follows:
in the formula, QOutflowFor the outflow rate, m3S; a is the cross-sectional area of water passing, m2S; x is the wet week, m;
i.e. single wide outflow qOutflowComprises the following steps:
the method for determining the output flow Q of the constant-flow water discharge subsystem comprises the following steps:
the liftable adopts the weir formula for the weir, and its weir head is H, freely outflows for the weir, and rectangle thin wall weir manger plate width equals with rivers passageway width, does not have the side direction shrink force, adopts the formula promptly:
Q＝mb(2g)1/2H0 3/2(6)
in the formula, m is a flow coefficient; b is an overflow weirWidth, m; g is the acceleration of gravity, m/s2；H0Full head on weir, m;
in order to calculate the flow by using the weir crest H conveniently, the influence of the near flow velocity crest in the formula (6) can be integrated into the flow coefficient m and considered together, namely the formula (6) is rewritten as follows:
Q＝m0b(2g)1/2H3/2(7)
wherein the content of the first and second substances,
m in the formula (8)0The flow coefficient including the influence of the near flow head can be calculated according to the praise empirical formula:
in the formula, p1M is the upstream weir height;
in the above calculation process, the application range of some parameters is:
weir water head (weir water head value during constant flow drainage): h is 0.1-0.6;
the width of the rectangular thin-wall weir: b is 0.2-2.0;
H/p1≤2；
that is, the discharge water flow rate Q ═ m is obtained0b(2g)1/2H3/2；
Single wide discharge flow qOutflow＝m0(2g)1/2H3/2。
Based on the process, when the working parameters of the ecological water replenishing system are determined:
the single-width discharge flow of the constant-flow discharge subsystem is Q, when the width of the overflowing weir is b, the discharge flow is Q, and the single-width outflow of the uniform outflow subsystem is QOutflowAccording to the law of conservation of material, the corresponding relation is determined that Q/Q can be realized when the overflowing weir width is bOutflowThe water is uniformly supplemented in the wide beach area, and the width of the beach area can be combined according to the actual requirement, and every Q/QOutflowAnd (3) constructing a gate with the width of the overflowing weir being b, and realizing the full coverage of water supplement in the whole beach area. And other parameters such as the weir width, the weir water head and the like can be flexibly adjusted according to specific requirements, and a new corresponding proportional relation is determined again.
It should be noted that the utility model provides a beach area constant current water replenishing method which is carried out under the condition that the parameters of the beach area to be replenished are determined; consequently, can be through above-mentioned method, at first confirm the actual conditions who treats the moisturizing beach area, obtain according to its calculation again the utility model discloses water charging system's parameter, and then realize the even moisturizing of constant current in beach area.
In the embodiment of the present invention, the method for driving the rectangular thin-walled weir to move up and down by the transmission mechanism in the step S4 specifically includes:
when the water level in the reservoir rises to enable the current weir water head to be larger than the set value of the weir water head, the floating ball pushes the ready-to-slide guide rail to rise under the action of the buoyancy of the floating ball, so that the horizontal rod is indirectly pushed to rise, the horizontal rod pulls the movable pulley block connecting rod to move upwards in the rising process to drive the movable pulley block to rise, and pulls the thin-wall weir connecting rod to move upwards to enable the rectangular thin-wall weir to rise, so that the weir water head is adjusted to be always kept at the set value in real time;
when the water level in the reservoir falls to enable the current weir water head to be smaller than the set value of the weir water head, the floating ball pulls the ready-to-slide guide rail to fall under the action of the gravity of the floating ball, and then indirectly pulls the horizontal rod to fall, the horizontal rod pulls the movable pulley block connecting rod to move downwards in the falling process to drive the movable pulley block to fall, and pulls the thin-wall weir connecting rod to move downwards to enable the rectangular thin-wall weir to rise, so that the weir water head is adjusted to be always kept at the set value in real time.
In the embodiment of the present invention, the arc-shaped water passing baffle in step S5 divides the overflow tank into two parts, the opening side of the arc-shaped water passing baffle and the overflow tank form the first half section of the uniform outflow subsystem, and the closed side of the arc-shaped water passing baffle and the overflow tank form the second half section of the uniform outflow subsystem; therefore, the step S5 is specifically:
after water in the reservoir enters the uniform outflow subsystem through the constant-flow water discharge subsystem, incoming water rapidly flows to two sides, the incoming water flows into the overflow tank and rolls when meeting the arc-shaped water passing baffle plate, so that water energy is eliminated, then the water firstly passes through the front half section of the arc-shaped water passing baffle plate and then is filled in the rear half section of the uniform outflow subsystem, then the water overflows the rear half section of the uniform outflow subsystem and uniformly enters a beach area, and constant-flow uniform water supplement of the beach area is realized. Wherein, the arc crosses the effect that water baffle played the energy dissipation on the one hand, and on the other hand has the centralized washing influence that arouses that weakens the incoming water, and the arc crosses the water hole of crossing that evenly sets up on the water baffle simultaneously, has made things convenient for the incoming water to flow out, realizes even flood plain.
Example 5:
in order to accurately replenish water to the beach area, a setting mode of the system in the beach area to be replenished is provided:
when the single-width discharge flow of the constant-flow discharge subsystem is Q, and when the width of the overflow weir is b, the discharge flow is Q, and the single-width outflow of the uniform outflow subsystem is QOutflowAccording to the law of conservation of material, the corresponding relation is determined that Q/Q can be realized when the overflowing weir width is bOutflowThe water is uniformly supplemented in the wide beach area, and the width of the beach area can be combined according to the actual requirement, and every Q/QOutflowAnd (3) constructing a gate with the width of the overflowing weir being b, and realizing the full coverage of water supplement in the whole beach area. And other parameters such as the weir width, the weir water head and the like can be flexibly adjusted according to specific requirements, and a new corresponding proportional relation is determined again.
Example 6:
the embodiment of the utility model provides an in provide the utilization the utility model discloses water charging system carries out the concrete example of beach area moisturizing:
determining the depth of the drainage water:
aiming at the beaches of the yellow river delta, the beaches are represented by the parameters that the distance L from the uniform outflow subsystem to the ocean is 3500m, the hydraulic slope i of the beaches is 1/10000, the roughness n is 0.025 and the permeability parameter K is 0.005m/d, the parameters are substituted into the formulas (1), (2) and (3) for trial calculation, and one R is given to determine one hOutflowThrough multiple calculations, when R is 0.0175, v is 0.026962m/s, t is 129812m, and the error is 6%, so that the requirement is met; namely setting the depth h of the discharged waterOutflowIs 0.0175 m.
Determine single wide outflow:
designing the overflow water depth h with the roughness coefficient n of 0.025 and i of 1/10000Outflow0.0175m, substituted into formula (5), and the single-wide flow rate q of the flood plain can be obtainedOutflowIs 0.0005m2/s；
Determining the outflow of the constant-flow water discharge subsystem:
the weir upper water head H of the constant-flow drainage subsystem is constantly 0.1m, various parameters of the rectangular thin-wall weir are verified, the width b of the outflow weir is 1.0m, and H/P1Is 0.09 to 0.33, is applied to the empirical formula (7), is substituted into the formula (9) to calculate the water discharge flow, and has the following parameters:
namely, the flow rate of the constant-flow water discharging subsystem is 0.0607-0.0626 m3And s. The error range between the maximum flow and the minimum flow is 3 percent, and the water discharge flow Q is 0.0607m3/s.
Determining working parameters of the ecological water replenishing system:
the working flow Q of the known constant-flow water discharging subsystem is 0.0607m3S, single wide flow q of uniform outflow subsystemOutflowIs 0.0005m2And/s, according to the law of conservation of substances, the corresponding relation is as follows: the single-width constant-flow water discharge subsystem corresponds to a 121m uniform outflow subsystem, namely 1:121, can realize uniform water replenishment in a 121m wide beach area when the overflow weir width is 1m, and has an outflow flow of 0.0605m3And/s is slightly lower than the working flow of the constant-flow water discharge subsystem, and the flow of the constant-flow water discharge subsystem can always meet the flow requirement of the uniform outflow subsystem. According to the actual requirement, a single-width overflow gate can be built every 121m by combining the width of the beach area, and the full coverage of water supplement of the whole beach area is realized.
The operation process of the water replenishing system is as follows:
according to the calculation result, the parameters of the constant-flow water discharging subsystem are set in advance according to the water level condition, the initial state of the movable pulley block device is adjusted, the height of the water level is monitored according to the floating ball, the length of the slide rail is adjusted,the height of the rectangular thin-wall cofferdam is adjusted through the traction of the movable pulley block, the initial weir water head H is guaranteed to be 0.1m, then the height of the cofferdam is automatically adjusted in real time through floating ball monitoring, connecting rod conduction and movable pulley block regulation and control along with the lifting of the water level of the reservoir, and the stable weir water head is constantly 0.1 m. The water passing through the constant-flow water discharge subsystem enters the uniform outflow subsystem, the rolling energy dissipation is carried out in the middle of the overflow pool, the water rapidly spreads over the two sides of the overflow pool, one part of the water enters the rear half section of the uniform outflow subsystem through the arc-shaped water passing baffle, and the other part of the water passes through the arc-shaped water passing baffle and enters the rear half section of the uniform outflow subsystem. Water finally passing through the uniform outflow subsystem is measured in hOutflowThe thickness flows to the beach area, and constant-current uniform water supplement to the beach area is realized.
In the description of the present invention, it is to be understood that the terms "center", "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "radial", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the equipment or components referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or an implicit indication of the number of technical features. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features.
The utility model has the advantages that:
the utility model provides a beach area constant current water charging system can realize according to cistern water level variation automatically regulated weir plate height, maintains the weir head invariable to keep out the invariant of flow. Meanwhile, the even outflow subsystem is matched, so that the water level can be kept to be even for flood plain with the set overflow depth. Therefore, manpower and material resources are effectively saved, the beach area water replenishing efficiency and benefit are improved, and the problems of beach area scouring erosion and small beach water replenishing coverage area caused by direct water drainage over beaches are solved. The system is simple to operate and high in automation degree.
Claims (7)
1. A constant-flow water charging system for a beach area is characterized by comprising a reservoir (1), a constant-flow water discharging subsystem (2) and a uniform outflow subsystem (3);
the reservoir (1), the constant-flow water discharge subsystem (2) and the uniform outflow subsystem (3) are connected in sequence;
a water outlet is formed in one side of the reservoir (1) and is communicated with the constant-flow water discharging subsystem (2);
the constant-flow water discharging subsystem (2) comprises a water flow passage (25), a lifting cofferdam device and a floating ball (24);
one end of the water flow passage (25) is communicated with a water outlet of the reservoir (1), and the other end of the water flow passage is connected with the uniform outflow subsystem (3);
the lifting cofferdam device is arranged on the water flow passage (25) and separates the reservoir (1) from the uniform outflow subsystem (3);
the floating ball (24) is connected with the lifting cofferdam device.
2. The beach area constant-current water replenishing system according to claim 1, wherein the lifting cofferdam device comprises a wave stabilizer (21), a transmission mechanism and a cofferdam;
the wave stabilizer (21) is connected with the cofferdam through a transmission mechanism;
the cofferdam is arranged on the water flow passage (25) and separates the reservoir (1) from the uniform outflow subsystem (3);
a floating ball (24) is placed in the wave stabilizer (21), and the wave stabilizer (21) is arranged in a water flow passage (25) on the side, close to the reservoir (1), of the cofferdam.
3. The beach area constant-current water replenishing system according to claim 2, wherein the wave stabilizer (21) comprises a hollow cylinder and a hollow circular truncated cone which are integrally connected from top to bottom;
the bottom surface of the hollow round table is closed, and a plurality of pores are uniformly arranged on the surface of the hollow round table.
4. The beach area constant-current water replenishing system according to claim 3, wherein the cofferdam comprises a clamping groove (23), a rectangular thin-wall weir (22) and a plurality of balls (213);
the clamping groove (23) is arranged below the water flow passage (25), one end of the rectangular thin-wall weir (22) is movably arranged in the clamping groove (23) in a lifting manner, and the other end of the rectangular thin-wall weir is arranged in the water flow passage (25);
the width of the rectangular thin-wall weir (22) is larger than that of the water flowing channel (25), and the rectangular thin-wall weir is in seamless contact with the water flowing channel;
the balls (213) are uniformly arranged on the inner surface of the clamping groove (23);
the top end of the clamping groove (23) is movably and hermetically connected with the contact part of the thin-wall weir through a slidable rubber sheet;
the height of the rectangular thin-wall weir (22) is the same as that of a cofferdam of the water storage tank (1), and the height of the rectangular thin-wall weir (22) is smaller than that of the clamping groove (23).
5. The beach area constant-current water replenishing system according to claim 4, wherein the transmission mechanism comprises a preparation slide guide rail (26), two chutes (27), a horizontal rod (28), a movable pulley block connecting rod (29), a movable pulley block and a thin-walled weir connecting rod (212);
one end of the slide rail (26) is connected with a floating ball (24) in the wave stabilizer (21), the other end of the slide rail is connected with one end of a horizontal rod (28), the horizontal rod (28) is arranged on two sliding grooves (27), the other end of the horizontal rod (28) is connected with one end of a movable pulley block connecting rod (29), the other end of the movable pulley block connecting rod (29) is connected with a driving wheel (210) in a movable pulley block, a driven wheel (211) in the movable pulley block is connected with one end of a thin-wall weir connecting rod (212), and the other end of the thin-wall weir connecting rod (212) is connected with two sides of the top end of a rectangular thin-wall weir (22);
the connection point of the preparation sliding guide rail (26) and the horizontal rod (28) and the connection point of the horizontal rod (28) and the movable pulley block connecting rod (29) are steel nodes.
6. The beach area constant-current water replenishing system according to claim 4, wherein the floating ball (24) is a hollow iron ball;
the parameters of the floating ball (24) are as follows:
the weight of the floating ball (24) is 1.2-1.5 times of the weight of the rectangular thin-wall weir (22), and the buoyancy of the floating ball (24) is the sum of the weight of the floating ball (24) and the weight of the rectangular thin-wall weir (22) which is 1.2-1.5 times.
7. The beach area constant-flow water replenishing system according to claim 1, wherein the uniform outflow subsystem (3) comprises an overflow tank (32) and an arc-shaped water passing baffle (31);
the cross section of the overflow pool (32) is semicircular, the top of one end of the overflow pool (32) is flush with and seamlessly connected with the top of the other end of the water flow passage (25), and the other end of the overflow pool (32) is smoothly connected with one end of the beach area (4) to be replenished;
one end of the arc-shaped water passing baffle plate (31) is fixedly arranged in the overflow tank (32), the other end of the arc-shaped water passing baffle plate is suspended in the overflow tank (32), and the open end of the arc-shaped water passing baffle plate (31) faces to the side of the rectangular thin-wall weir (22);
a plurality of water passing holes (33) are uniformly arranged on the arc-shaped water passing baffle (31).
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